کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1521878 | 995300 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phenomenological understanding of dewetting and embedding of noble metal nanoparticles in thin films induced by ion irradiation
ترجمه فارسی عنوان
درک پدیده شناختی از تجزیه و جذب نانو ذرات فلز نجیب در فیلم های نازک ناشی از اشعه یون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
The present experimental work provides the phenomenological approach to understand the dewetting in thin noble metal films with subsequent formation of nanoparticles (NPs) and embedding of NPs induced by ion irradiation. Au/polyethyleneterepthlate (PET) bilayers were irradiated with 150Â keV Ar ions at varying fluences and were studied using scanning electron microscopy (SEM) and cross-sectional transmission electron microscopy (X-TEM). Thin Au film begins to dewet from the substrate after irradiation and subsequent irradiation results in spherical nanoparticles on the surface that at a fluence of 5Â ÃÂ 1016 ions/cm2 become embedded into the substrate. In addition to dewetting in thin films, synthesis and embedding of metal NPs by ion irradiation, the present article explores fundamental thermodynamic principles that govern these events systematically under the effect of irradiation. The results are explained on the basis of ion induced sputtering, thermal spike inducing local melting and of thermodynamic driving forces by minimization of the system free energy where contributions of surface and interfacial energies are considered with subsequent ion induced viscous flow in substrate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 147, Issue 3, 15 October 2014, Pages 920-924
Journal: Materials Chemistry and Physics - Volume 147, Issue 3, 15 October 2014, Pages 920-924
نویسندگان
Jai Prakash, A. Tripathi, Sanjeev Gautam, K.H. Chae, Jonghan Song, V. Rigato, Jalaj Tripathi, K. Asokan,